PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-20:12:40
G10     268.2          39.1               10.1 +/-    1.37      14.9 +/-    1.37  0.040 / 0.040
G13     41.3           17.2                8.9 +/-    1.28      20.9 +/-    1.28  0.040 / 0.040
G15     61.6           52.2                9.9 +/-    0.90      12.1 +/-    0.90  0.110 / 0.140
G16     277.7          11.9                4.7 +/-    9.05      12.5 +/-    9.05  0.130 / 0.170
G20     299.5          60.8                9.6 +/-    0.96      10.8 +/-    0.96  0.380 / 0.640
G21     6.6            72.6               10.7 +/-    0.90      11.2 +/-    0.90  0.250 / 0.480
G24     116.8          15.1               11.8 +/-    1.66      29.2 +/-    1.66  0.140 / 0.260
G27     318.8          18.6                8.6 +/-    1.45      19.7 +/-    1.45  0.140 / 0.280
G29     168.0          30.4               10.8 +/-    1.46      18.7 +/-    1.46  0.140 / 0.330
G32     204.2          10.8              -12.9 +/-   27.30     -35.4 +/-   27.30  0.140 / 0.220